BARTH, Paul (1858—). A German sociological writer. He was born at Baruthe in Silesia, August 1, 1858. He is editor of the Vierteljahrsschrift für wissenschaftlichePhilosophie, and a professor (ausserordentlich) in the University of Leipzig. He has written on philosophical subjects, but his Philosophie derGeschichte als Sociologie, the first volume of which appeared in 1897, is the best historical sketch of the development of sociological theory which has been published in Germany. Among Dr. Barth's other writings should be mentioned: Geschichtsphilosophie Hegels und die Hegelianerbis auf Marx und Hartmann (1890); TiberiusGracchus (2d ed., 1893); Beweggründen dessittlichen Handelns (1889).